Also, just because none of us actually roleplay the time it takes to travel back from one's bind point (days, weeks, sometimes months IC over continents), it's kind of cool to have an option that allows immediate transportation to where your friends are there, fighting bravely, possibly dying etc... Sort of a, "forget my own life, I have to return to the fray and aid them!" kind of option. Say, a mage that weakly casts invisibility after returning, but left his whole party behind fighting a bloody battle against ogres... forces himself back to where he fell, forfeiting his recovery to use a bag of healing potions etc.
There's not a lot of mechanical point except in cases like Lynn said above, where you're fifty thousand leagues under the sea or something, but I have on occasion seen it used, especially when roleplaying more dramatically instead of simply trotting for 2 seconds across the whole of Dregar to rejoin. Sure a lot harder to live with though, especially at higher levels.
